2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Photo Electric Effect, X- Rays & Matter Waves

JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Self Evaluation Test - Dual Nature of Radiation and Matter

  • question_answer
    A particle of mass m is projected from ground with velocity u making angle \[\theta \] with the vertical. The de-Broglie wavelength of the particle at the highest point is -    

    A) \[\infty \]

    B) \[\frac{h}{mu\sin \theta }\]

    C) \[\frac{h}{mu\cos \theta }\]

    D) \[\frac{h}{mu}\]

    Correct Answer: B

    Solution :

    [b] Velocity at highest point\[~=usin\theta .\] \[\therefore {{\lambda }_{D}}=\frac{h}{mu\sin \theta }\](Since \[\theta \] is velocity wrt vertical)


You need to login to perform this action.
You will be redirected in 3 sec spinner